I have a different one, the 190D, which has a 10 x 0 sewing field. I bought the 10 x 17 hoop as well, but the machine only recognises 10 x 10 designs. So you can use the larger hoop to combine designs, say an embroidery in the top part, move the hoop and do lettering in the lower part. OR you need to split a larger design in 2 parts, using software. PED basic can't do that, you need PE7 or some other software. I use Embird to do it.

I am afraid, that you have to buy another machine with larger possibilities.

I dont know your machine,but I got a bigger hoop for my designer 1 and the dealer made a re-calibrerting of the machine that worked
bibi

Maximum sewing field for this machine is 3.9 X 3.9. No way to change it except trade in the machine on one of the more expensive models, about $1,000 more than the cost of the 900 will jump you up to the next size which is about 5 X 7; and it just keep going up from there.